I'm pretty sure it's a matter of intellectual property now. Same reason why Bayonetta 2 isn't on the switch.
With that out of the way holy hell I'm so excited for these games on the Switch! I'm absolutely going to buy Bayonetta 1 again and probably sink like an entire week into both of them. And now Bayonetta 3 is a thing too!! This is going to be fantastic.

Easy. It's a sense of accomplishment. And it's about the gameplay and mechanics too.
This "shit on collectathons" trend picking up as of late is kind of entirely terrible. Just because you don't enjoy something doesn't mean it's bad and that other people are somehow lesser for enjoying that thing. Let people enjoy things.

I don't think that's a universal factor as much of one that applies more to certain videogame genres and publishers. I wouldn't worry about it as a general game thing - plus it's cleraly working and making these companies money. There are still plenty of games where these factors you speak of don't come into play.

fwih cosplays are extremely stressful and trying to coordinate something with a s/o could be damaging to the relationship. starting from square one on actually agreeing on who to cosplay as.
what might be cutesy to one couple (or observer) may be not feasible to another or just neutral to even more still

i think there's like mainstream trendy though which is fairly different from hipster circles
hipsterism has become fairly mainstream in its own right though
its kind of messy and labels like those are dumb anyway